Had a similar leak on my 07 trailer, which were also fitted with aluminium caps with window. On the alum cap there is an O ring where the oil was leaking from, changed the O ring and problem solved,...

Local dealer selling an 07 X2 for 67k, in the US similarly based 07 X2 50k, as this would be RORO freight plus gst etc would land around close to 70k plus trailer mods another $1500, just doesn't add...

Looks awesome, I'm sure now they have profile they could replicate easily. btw is the hole position for the access panel in the long front piece in correct location? Appears out of line to the carpet...

I had an X2 2007, I have a dealer not too far away but I didn't go to them for servicing, instead i had a mobile marine mechanic perform all servicing and bought parts from the dealer if i needed to....